Unlock a special scenario and create Darkness’s special costume, ‘Extra Darkness’.
Although heroines in swimsuits also appear in the main game, you can enjoy an additional scenario and a special swimsuit in an original design exclusive to the DLC!
Incorporating her key motif, this swimsuit is based on the main costume of Darkness.
The degree of exposure of the special swimsuit event CG changes depending on the materials used!
The story changes depending on the differences, allowing you to enjoy various sides to Darkness.
The DLC will become available in Chapter 2 after you have received a new set of recipes from Vanir. The recipe list will contain a wide range of outfits for you to choose from, but only this DLC will allow you to unlock ‘Extra Darkness’.

More details on the official game page of KonoSuba: God's Blessing on this Wonderful World! Love For These Clothes Of Desire! - Darkness Special Swimsuit ...